THE CODLING MOTH IN THE OZARKS. O 



larvae and pupae produced 275 adults. A much larger number of pupae 

 than of larvae were injured in collecting and failed to give out moths. 

 This, together with the fact that 193 of the total number collected 

 were taken after emergence had begun, would throw the maximum 

 of emergence here shown considerably later than it should be. As 

 before stated, about 25 per cent of the moths had emerged in the 

 field, from cocoons above ground, by April 21. 



In 1907 Mr. Dudley Moulton records the finding of a few empty 

 pupal skins while collecting wintering material in an open packing 

 shed April 27. This was 25 days after the apple blossoms had fallen, 

 a period of cold weather occupying the interval. From material 

 then collected moths continued to issue in the laboratory until June 1 . 



Fig. 1.— Curve showing emergence of spring brood of adults of codling moth (Carpocapsa pomonella) 

 from collected wintering material. 



Life of the moth. — Records of 28 spring-brood moths emerging 

 April 13-23, and confined in a Riley rearing cage out of doors, show 

 an average life of 10.5 days. Another lot of 35 moths that emerged 

 April 25 to May 4 gives an average life of 9.1 days. The life of the 

 moths is largely dependent on temperature. They are able to lay 

 fertile eggs in 3 to 5 days after emergence, but during cold weather in 

 spring or fall they remain torpid for long periods. Moths can be fed 

 by putting into the cage a piece of raw cotton soaked in sirup or 

 fruit juice. However, even without food, if a sufficient number of 

 moths are confined together, eggs will be laid abundantly. Data on 

 caged spring-brood moths are given in Tables V and VI. These 

 moths issued from the wintering material collected March 24 and 

 March 31. 



